[Patients with mental retardation in a psychiatric hospital].

Objective: Because only few data are available, inpatient care of patients with mental retardation was evaluated to get a valid data base concerning quality and quantity of care and to reveal their deficits.

Methods: All patients with first admission to a psychiatric hospital between 1996 and 2002 were included in te cohort study (n=9727). The analyses were based on the psychiatric basis documentation system (DGPPN-BADO).